CORE XY 3D Printer - Frame

For the frame we are going to use 2040 Aluminium V Profile.  This creates a rigid frame for the printer which is very important in achieving quality prints.  My preference is to tap the ends of the Alu profile with an M6 tap and then bolt the frame together. 

The printer design we will build is a 500mm² design.  Each Alu profile is 500mm long.  Please take care when assembling the frame that the oreintation of the aluminium profile is correct.  One side is 40mm wide the other 20mm wide.

The 2 Top 2040 Sections running front to back (Y Axis) need to be V Slot Aluminium profile to accept the Y axis carriages.

The 40mm side is layed flat for the lower and upper square frame.  The vertical legs are then attached with the 40mm face, orientated to the front of the printer.

The strongest and stiffest attachment method is to M6 tap the Alu profile and use M6 bolts to screw the frame together.  This requires drilling the 6mm hole in the frame and countersinking it so the bolt head is not proud.

 

 

6.5mm holes drilled into the Alu 2040 section.  A 10mm counter sunk hole is then drilled so the bolt head can be flush against the frame. 

 

 

 

 

The design of the printer doesnt have to use 500mm long sections.  It can be smaller or even larger, but the other components (8mm rods and threaded rods) then need to be sized accordingly.